PreparED Study Materials
EC 202: Prin of Macroeconomics
School: Portland State University
Number of Notes and Study Guides Available: 9
Notes
Study Guides
Videos
Opportunity Cost Explained: Weighing Choices in Business Decisions
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Discover the principle of opportunity cost, distinguishing between explicit and implicit costs. Using the example of Hanna's Pizzeria, grasp how business decisions weigh the costs of forgone alternatives. Learn how these costs influence financial and economic choices.
Lags in Monetary and Fiscal Policy Impact on Aggregate Demand
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This video explores the causes of lags in the impact of monetary and fiscal policy on aggregate demand, drawing analogies to recognizing seasonal changes, adjusting cooking temperatures, and waiting for planted seeds to grow, and discusses the implications of these lags for the debate between active and passive economic policy approaches.
Comparing Four-firm Ratio & HHI: Assessing Market Concentration & Powe
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Explore the differences between the Four-firm Concentration Ratio and the Herfindahl-Hirschman Index. Understand how they assess market concentration and dominance. Get insights into market power dynamics by comparing these two indices.
Shoeleather Costs: The Hidden Economics of Everyday Banking Activities
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Understand the economic implications of "cost" and its relevance in daily decision-making. Learn about shoeleather costs, including its tangible and intangible components. Grasp how different scenarios impact these costs and ways to optimize them.
How Unexpected Inflation Impacts Creditors, Debtors, & Business Operat
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Unexpected inflation can shift wealth between lenders and borrowers. This phenomenon affects the real value of money repaid, disadvantaging the creditors. Additionally, businesses face operational expenses like menu costs during inflation adjustments.
First Video In Our Three Part Series for Midterms
Intro to Economics: Understanding the Fundamentals of Spending
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Explore economics with a focus on scarcity, supply and demand, and elasticity. Gain practical insights into decision-making and economic principles that impact our world.














